You can share your location with the extension so it can automatically determine the perfect time for the change. But if you value your privacy, you can also set up the time manually. We tried every extension on this list and are confident you’ll find one that suits your needs. But going from dark to light, and back again, is not a revolutionary feat. Macs have long had this functionality built-in and the Chrome for Android app can do it too, as long as you enable an experimental option. What sets automaticDark apart is that you don’t have to stick to dark mode—there are 21 themes to choose from, including the ones that come built into Firefox. This will not affect a website’s content much, but changing your theme to a darker one in low light conditions will help you protect your eyes from straining. After you install this extension, every time you click the Stylebot icon in the top right corner of your browser, a sidebar with options will appear. Select the element of the website you want to change—a headline, the body text, etc—and then go back to the sidebar to see all the ways you can tweak it. The process can be a bit tedious because websites have a lot of different elements, but as long as you don’t delete your cache or open the website in Secret Mode, your changes will stick even after you close your browser. If you do know CSS (you smart cookie), go to the bottom of the Stylebot sidebar and switch to Code mode. There you’ll get a clean canvas to do your thing and mess around with the site’s code as you please. Right next to Code, you’ll see the Magic tab, where you can enable Readability mode. This will reduce a website to its more basic elements, getting rid of ads, videos, and other distracting content. If you keep this feature on, Firefox will remember your choice and every time you click on an article within that website, you’ll automatically get the stripped-down version of it. Another upside of Readability mode is that you can also apply light, dark, and sepia themes, tweak things like font, text width, and line height, and use a slider to apply a greyscale layer to the page to reduce contrast. If coding is not your thing, you can stick to browsing themes from the community archive. Choose your favorite and install it by clicking the Install with Stylus button. Stylus is not as intuitive as Stylebot, but it has a lot of themes to choose from, and even fun, random elements like this Nyan Cat progress bar for YouTube, which may be worth downloading this extension for alone. If you’re thinking this doesn’t sound so different from Firefox’s built-in reader view, you’re right—it’s not. However, we found Tranquility Reader does a much better job at choosing which elements of the page to keep (the main image and the entire body of text) and which ones to get rid of. Another feature that makes Tranquility Reader stand out is the fact that it’s a quick switch you can turn on and off at any moment without having to refresh the page. The best part is that this extension is intuitive and super easy to use. Just click on its icon in the top right corner of your browser and select one of the categories you want to tweak: You can choose between Player, Themes, Appearance, and more. Click on one and you’ll see all the elements you can edit. Most of them employ drop-down menus, toggle switches, or sliders, so it’s easy to see what they do and revert the change if you need to. Improve YouTube! also has a number of themes you can apply to Google’s video site, so if you just want a splash of color, you can easily replace the black, white, and red palette with your favorite hues.
